How to use Gobos in Blender

1. After you download and extract the Gobo texture, start Blender and add an Area Light or Spot Light to your scene. Select Cycles as render engine and enable Viewport Shading: Rendered mode. Also go to World Properties > Surface and reduce the "Strength" value so you can see the Gobo texture pattern better when you load it.

2. Select the Area Light and go to Object Data Properties. Select "Disk" as shape. Set the Beam Shape > "Spread" value to "1" and adjust the "Size" and "Power".

3. Select your Area Light and then go to Shader Editor and switch to Object Shader. Use shortcut "Shift + A" and select Texture > Image Texture to add the node. Click Open on the Image Texture node and browse for the downloaded ".jpg" file and open it.

4. If you enable "Node Wrangler" from Preferences > Add-ons you can use the shortcut "Ctrl + T" to add "Texture Coordinate" and "Mapping" nodes to adjust the Gobo texture scale and offset.

   Connect "Texture Coordinate - Generated" output to "Mapping - Vector" and set the extrapolation type to "Clip" on the Image Texture node.